| 单词 | 囊胚 |
| 释义 | 〔trophoblast〕The outermost layer of cells of the blastocyst that attaches the fertilized ovum to the uterine wall and serves as a nutritive pathway for the embryo. Also called trophoderm 胚胎滋养层：囊胚细胞的最外层，它会将受精卵与子宫壁连在一起，同时它是胚胎获取营养的通道 也作 trophoderm〔blastocoel〕The fluid-filled, central cavity of a blastula. Also called segmentation cavity 囊胚腔：囊胚中充满液体的中心的洞 也作 segmentation cavity〔morula〕The spherical embryonic mass of blastomeres formed before the blastula and resulting from cleavage of the fertilized ovum.桑椹胚：形成于囊胚之前且处于胚胎期内的球形裂球群，由受精卵细胞的分裂而成〔epiblast〕The outer layer of a blastula that gives rise to the ectoderm after gastrulation.外胚层：囊胚的外层，在原肠胚形成之后生后外胚层组织〔blastula〕An early embryonic form produced by cleavage of a fertilized ovum and consisting of a spherical layer of cells surrounding a fluid-filled cavity. Also called blastosphere 囊胚：由分裂受精卵产生的早期胚胎外形，由围绕充满液体的洞的球形细胞层组成 也作 blastosphere〔emboly〕The formation of a gastrula from a blastula by invagination.内陷：囊胚翻转形成胚囊〔invaginate〕To infold or become infolded so as to form a hollow space within a previously solid structure, as in the formation of a gastrula from a blastula.套叠：折叠或变成折叠以便在原先实心的结构中形成一个中空的空间，如囊胚形成原肠胚的过程〔gastrula〕An embryo at the stage following the blastula, consisting of a hollow, two-layered sac of ectoderm and endoderm surrounding an archenteron that communicates with the exterior through the blastopore.原肠胚：一种囊胚之后的胚胎，含有中空、两层的外胚层和内胚层，包围着通过胚孔跟外界交流的原肠〔blastocyst〕The modified blastula that is characteristic of placental mammals. Also called blastodermic vesicle 胚泡：转化的囊胚，为胎盘哺乳动物的特征 也作 blastodermic vesicle〔blastocyte〕An undifferentiated blastomere of the morula or the blastula stage of an embryo.胚细胞：桑椹胚或囊胚期胚胎的未分化分裂球〔cleavage〕The series of mitotic cell divisions that produces a blastula from a fertilized ovum. It is the basis of the multicellularity of complex organisms. Also called segmentation 卵裂，卵割：由一组有丝分裂细胞从受精卵中生成的囊胚，是复杂有机体中多细胞的主要成分 也作 segmentation |
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